Which equation below shows a constant of proportionality of 4? A- y= 4x
B- y= 1/4x
C- x= 4y
D- y= 0.4x

Janie has $3. she earns $1.20 for each chore she does and can do fractions of chores. she wants to earn enough money to buy a cd for $13.50. write an inequality to determine the number of chores, c, janie could do to have enough money to buy the cd.

Which equation represents the function on the graph?

Typically a point in a three dimensional cartesian coordinate system is represented by which of the following answers in the picture !